Mechanism for feeding paper to type-writers.



E T. A. MoOALL. MECHANISM EOE FEEDING PAPER T0 TYPE WRITERS. APPLICATION FILED SEPT. 24, 1909. 1,929,255 I Patented June 11,1912.

2 SHEETS-SHBET 1.

Wi'zizasses.

v T. A. MoGALL. MEUHANISM FOR 3331mm PAPER T0 TYPE WRITERS.

APIPLIOATION FILED SEPT. 24, 1909.

Patented June 11, 1912.

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kiwlik 'rHoMAs ArMcCALL, or CLEVELAND, OHIO, ASSIGNOR TO THE AUTOMATIC TYPE- WRITER COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

MECHANISM FOR FEEDING PAPER TO'TYPE-WRITERS.

Original application filed March 19, 1908, Serial No. 422,033. Renewed Divided and this application filed: September 24', 1909.

To all whom it may concern:

: Befit known-that I, 'THOMAS A. MCOALL, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga' and State of Ohio, have invented a certain new and useful Improvement in Mechanism for this application is a division. It will be un- Feeding Paper to Type-Writers, of which the following is a full, clear, and exact description.

' The object of this invention is to auto- .ina-tically feed sheets of paper to automati (arlly operated typewriters.

In. the precise form in which the inven-i tion 1s shown taken in connection with the mechanism shown for operating it, it is es-' pecially adapted for use with .automatic typewriter operating mechanism which jorms-the sub ect matter of my pending ap pacer-ion No. 491,602, filed April 22, 1909, .{the same being a renewal of an application No. 422,033,,filed March 19, 1908,) of which derstood, however, that the invention as defined by the appended claims is not restrictedto the specific construction shown, nor to use in connection with the herein unclaimed mechanism shown in said original application.

In the drawing, Figure 1 is a side ele'va: tion showing the mechanism in which the present invention is embodied and so much of an automatically operated typewriter as owe the operative relation between said mechanism and the typewriter. .Fig. 2 is a front elevation of the invention and corresponding parts of the typewriter and its operating mech of the-mechanism for guiding the suction cups.

Referring to the parts by letters, 87 represents a standard which carries at its upper end a receptacle 88 which is disposed at a slight inclination. This receptacle is a boxlike structure having an open front side, and it is provided I holding of a pack of paper sheets P, which the mechanism to be described is to feed, sheet by sheet, to the paper holding mechanism of a typewriter. The receptacle as shown is pivoted to the standard 87 and may be swung into any desired angular positionfand there fixed by a 'set screw .89. Pivotally mounted upon said receptacle isa shaft 90 having arms 91 fixed thereto.

A tube 92 carrying suction cups 93 ex- Specification of Letters Patent.

anism. Fig. 3 is an inside view.

, which the pipe 94- for and adapted to the Patented J une 11, 1912.-

April 22, 1909, Serial No. 491,602. Serial No. 519,415.

tends across thev receptacle 88 near the lower part thereof. This tube is moved in right lines toward the pack of paper in said receplracle, and then away from the same for purposes to be presently described. order that the tube may be so moved the. following mechanism is employed: Brackets 93 are fixed to the two outer suction cups. A rod 86, which is parallel with the tube 92,

passes through these brackets, and is rigidly fixed thereto. This rod passes through slots 91 in the arms-91. Upon the ends ofthis rod are the rectangular guide blocks 85 which slide in. guideways 84 fixed to the sides ofthe-receptacle 88. It is clear therefore thatwhen the rock shaft 90 is rocked the suction cups will move either toward and against the top sheet in the receptacle or awayfrom the same, and will move in lines at right anglesto the plane of said top sheet. V I e 94 represents a' suction pipe whichcommunicates with the tube 92 and extends to and is connected with a pneumatic cylinder 95. This cylinder is fixed in position and contains a piston 96,the piston rod 97 of which extends upward and is pivotally connected with an arm 99 fixed to the shaft 90. A coil spring is connected at its upper end with a fixed bracket 95 while 85 with said piston acts to draw the its lower end is connected rod, wherefore the spring piston up out of its cylinder. flexible tube 94 is connected with the op-., posite end of the pipe 92 to that the pipe 94 isconnected, and-this tube 94 is connected with a valve casing 9 which is also connected by means of a pipe 7 with an air exhausting device of any suitable construction. nally cylindrical, and it contains a cylindrical valve 10 wherein is a port 10 through may be placed in communication with the pipe 7, and a relief port 10 through which pipes maybe 100 placed in communication with the atmosphere. This valve has connected to it, on opposite sides of its axis, the two links 13 and 14, which links at their upper ends are connected with two levers 15, 15, mounted side by side on' a'common axis. The other ends of these two levers lie-close to a constantly rotating cylinder 28, in the periphcry of which .are annular recesses where- A second towhich 90 The valve casing is inter- 95 in are pivoted a plurality of triggers 29.

These triggers may be, retracted into said recesses or may project therefrom so as to engage with said levers. A perforated strip 35 which is to control the operation of the typewriter and its associated parts runs over this cylinder and is driven,-belt-' like, thereby in the direction indicated by the arrow in Fig. 1. Adjacent to the cy1in der is an electro-magnet32 which is constantly energized, The triggers are made of iron or steel, and the attraction of the .magnet tends to swing them out of the recesses in which they may lieinto operative position; The unperforated part. of the paper strip prevents such outward action,- except that whenever a perforation in the paper comes opposite one of said triggers the magnetwill draw the trigger through the perforation. and the trigger will then engage the associated lever and rock it. If it be the lever 15 connected with the link 1th which is rocked the valve 10will be turned so asto establish communication between the air exhausting device and the tube'94. Air will thereby be withdrawn from tube 92*and from the cylinder 95. The piston 96 will be drawn down and thereby the shaft 90 will be rocked in the.

direction which causes the arms 91 to swing outward. Previously to so swinging they had occupied a position in which the suction cups 93 had been resting againstthe top sheet of paper in' the receptacle '88. 'hen the air was exhausted and -was withdrawn from tube 9'2- the top sheet of paper was drawn by the suction against said suction cups so that when. by the movement of the piston as described. the arms 91 were swung to the position shown in Fig. 1, the 10 top sheet of paper was carried with it. The lower edge of this paper is carried out of the receptacle 88 and directly over a guide tube 86. When the. parts have reached this position another perforation in the perforated strip will allow the projection of a trigger associated with the lever 15 which trigger will strike the lever and rock it, thereby turning the valve 10 to a position such as will-bring the relief port 10" therein in communication with the tube 01L; Air will 'rush in to said tube, and into the tube 91', and into the cylinder 91* with the result that the paper will be released by the suction cup and will fall down into theguide tube 86 by which its lower edge is guided between two rolls 120 and 193, on

the typewriter carriage. When thereafter said rolls are turned either by hand or by suitable mechanism, this paper will be drawn between them into proper position to receive the type impression. The described turning of said valve will cause the lever. 15 to be rocked back to its normal position. This will withdraw the trigger 108, and thereupon spring 101 will rock .rock-shaft' 90, and the suction cups will again be moved against the top sheet of paper in the receptacle.

Having described my invention, 1 claim:

1. In combination with the paper holding mechanism of a typewriter, a paper receptacle, pneumatically operated mechanism for transferring paper sheet by sheet from. said receptacle to said paper holding mechanism, a valve controlled conduit connected with the pneumatically operated mechanism, a lever operatively connected to said valve, a rotating member, a plurality of dogs pivoted upon said member, means causing said dogsto engage with the lever, and a perforated strippassing between the engagement with the lever. 2. In combination with thepaper hold mg mechanism of a typewriter, a tube sucreceptacle, a rock shaft having slotted arms, devices connected with the cups and projecting into the slots in said arms, means for rocking said rock shaft, a valve controlled conduit which includes a flexible pipe connected with said tube, and mechanism for operating the valve in said conduit.

In combination with the paper holding mechanism of a typewriter, av paper retion cups, mechanism operated by the rock shaft for moving said tube and suction cups toward and away from the paper in said receptacle, twoflexible tubes connected with opposite ends of the tube carrying the suction cups. a valve casing intermediate oil. said flexible tubes and an air exhausting mechanism, a cylinder with which the other flexible tube is connected, a piston in aidcylinder, mechanism through which said piston operates said rock shaft, a valve in said valve casing, and means for operat ing said valve. i

In testimony whereof, I hereunto aflix my signature in the presence of two witnesses.

'll-lOM'AS A. h1C(i;\.LlJ.

i Witnesses:

H. R. SULLIYAX, E. L. "llnunsron.

dogs andthe lever and controlling their tion cups connected therewith, guides compelhng the movement of said cups in right I lines toward and from the paper in said" ceptacle, a rock shaft, a tube carrying 5110- 

